Photochromic materials derived from ring-opening monomers and photochromic initiators

A photochromic composition comprising:

• (a) a polymeric material;
• and
• (b) at least one photochromic materialin contact with at least a portion of the polymeric material, the at least one photochromic material comprising a reaction product of
• (1) at least one ring-opening cyclic monomer chosen from a cyclic ester and a cyclic carbonate;
• and
• (2) a photochromic initiator.

A photochromic composition comprising:

• (a) a polymeric material;
• and
• b) at least one photochromic material bonded to at least a portion of the polymeric material, the at least one photochromic material comprising
• (1) a photochromic group, and
• (2) at least one segment formed by ring-opening polymerization and comprising the residue of a plurality of ring-opening cyclic monomers bonded to the photochromic group, the ring-opening cyclic monomers being chosen from cyclic esters, cyclic carbonates, cyclic ethers, cyclic siloxanes, and combinations thereof, wherein the at least one segment has a number average molecular weight of at least 1000 g/mol.;
• and wherein the photochromic material when bonded to the polymeric material has a T½ value that is no greater than T½ value of a corresponding photochromic material that lacks a segment comprising the residue of a plurality of ring-opening cyclic monomers.

A method of making a photochromic composition comprising:

• connecting at least one photochromic material to at least a portion of a polymeric material, wherein the at least one photochromic material comprises a reaction product of:
• (1) at least one ring-opening cyclic monomer chosen from a cyclic ester and a cyclic carbonate;
• and
• (2) a photochromic initiator.